ChatGPT
OpenAI
OpenAI started in 2015 as a nonprofit research lab dedicated to ensuring artificial general intelligence benefits all of humanity. Read more →
Latest ChatGPT updates
1,102 published updates
The Defender’s Window
Title: The Defender’s Window
OpenAI joins PORTS-Pike project
Title: OpenAI joins PORTS-Pike project
New policy ideas for the Intelligence Age
Title: New policy ideas for the Intelligence Age
The builder’s guide to GPT‑5.6
Title: The builder’s guide to GPT‑5.6
Previewing Ultrafast mode: GPT-5.6 Sol at up to 14X the speed
Title: Previewing Ultrafast mode: GPT-5.6 Sol at up to 14X the speed
OpenAI appoints Dali Rajic as Chief Revenue Officer
Title: OpenAI appoints Dali Rajic as Chief Revenue Officer
Latest ChatGPT videos
738 published videos
YouTube
Lowe’s gets answers faster with GPT-5
Lowe’s has built their AI strategy around three pillars: "how we shop", "how we sell", and "how we work". GPT-5 can help all three pillars by holding context longer, applying reasoning across multiple inputs, and reducing the number of step...
YouTube
GPT-5 reshapes how teams work at Moderna
At Moderna, scientists who have never written code are generating algorithms in minutes in plain English using GPT-5. In this short video, Brice Challamel, Head of AI Products & Innovation, shows where GPT-5 is already influencing his work.
YouTube
Build Hour: GPT-5
GPT-5 is OpenAI’s most steerable reasoning model yet. This Build Hour walks through its new capabilities, how to use it in the Responses API, and practical prompting techniques for coding and agentic tasks. Bill Chen (Applied AI), Eric Han...
YouTube
Build Hour: Built-In Tools
Built-in tools let you extend models out of the box without writing custom functions. This Build Hour shows you how to use web search, file search, code interpreter, MCP, and image generation directly with the Responses API, with demos of...
YouTube
Build Hour: Voice Agents
Voice agents don’t just transcribe anymore — they think, talk, and call tools in real time. This Build Hour demos speech-to-speech agents built with the Realtime API and Agents SDK that can handle conversations natively in audio, reason ab...
YouTube
Build Hour: Reinforcement Fine-Tuning
Reinforcement fine-tuning (RFT) lets you improve how models reason by training with graders instead of large labeled datasets. This Build Hour shows you how to set up tasks, design grading functions, and run efficient training loops with ju...
OpenAI started in 2015 as a nonprofit research lab dedicated to ensuring artificial general intelligence benefits all of humanity. In November 2022, ChatGPT changed the public's perception of AI overnight — reaching one million users in five days and accelerating the entire industry by years. Today, OpenAI operates across consumer products, enterprise tools, and a developer API that powers thousands of applications worldwide, making it the most recognized name in modern AI.
Timeline
Founded as a nonprofit AI research lab in San Francisco.
GPT-1 released; first transformer-based language model.
GPT-3 launched, opening the API to developers.
ChatGPT released — reaches 1 million users in 5 days.
GPT-4 released; plugins and multimodal capabilities added.
GPT-4o and o1 reasoning models launched; Sora video model unveiled.
o3 and o4-mini released; GPT-4.5 and GPT-5 roadmap confirmed.
